The world's largest glacier outside the polar regions is the Fedchenko Glacier in the Pamir Mountains of Tajikistan.

Here are some key facts about it:

* Length: Approximately 77 kilometers (48 miles)

* Area: Around 700 square kilometers (270 square miles)

* Location: The Pamir Mountains, Tajikistan, near the border with Afghanistan and China.

* Significance: It is a major source of water for the region and plays a vital role in the local ecosystem.

It's important to note that the size of glaciers can fluctuate due to factors like climate change, and other glaciers might surpass Fedchenko in size in the future.